Saw.



G. A. ZIMMERMANN.

SAW 43. ?PLIl'JAlION' FILED APR. 8, 1908.

Patented May 11,1909;

J'nventun 7H5 NORRIS PETERS cc, wasmucruzv, n. c.

' PATENT anion.

GUSTAV ALBERT ZIMMERMANN, OF REMSOHEID, GERMANY.

SAW.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed April 8, 1908. Serial No. 425,949.

Rhenish Prussia, Germany, a subject of the Emperor of Germany, have invented a new 5 I provided with a handle tube is. This tubular portion is provided with the vertical op- My invention has reference to saws and especially to carpenters and like workmens and useful Improvement in Saws, of which the following is a specification.

saws and it has for its object a new and use ful construction of the handle and its combination with the saw blade which allows connecting both parts without riveting or screwing them together.

I have shown on the accompanying drawings some modifications of my new saw.

tion of 1 along line 1-4:, F 3 is a horizontal section along hne ll-ll of Fig. 1,

and. 7 are two further modifications of my improved device and Figs. 8 and 9 illustrate horizontal sections of Figs. 6 and 7.

from the wedge (Z. WVhen mounted the portions it, 72. form a uniform tube in which is inserted the wood handle .9.

Another variation of my invention is shown in Figs. 6 and 8 in which the plate 0 is posite slots a through which the wedge r is entered having a head or protuberance r which bears against the tube wall as shown and is held in position by means of the hen dle 8 As seen from Figs. 7 and 9 the wedge plate 5 (Z may be fitted with a blade spring 7) which bears against the portion or stay e filling out the slot 12 and holding thus firmly in position Figure 1 is a side view, Fig. 2 a vertical sec 5 the plate (Z which on its back side has a tongue c, both tongue and plate cZ forming part of the tubular portions 7t according to Figs. 4 and 5 show a modification, and Figs. 6 I

Like letters of reference indicate like parts j throughout the drawings.

By a is marked the saw blade which at its end is provided with rectangular slots 5.

c is a back plate having a pressed O1? stamped out portion in order to form a loop 6 which portion projects through the slot 1) of the saw blade so that the loop 6 is outside the saw blade and thus enabled to receive a wedge plate d which on being forced into said loop 6 Figs. 1-3 causes the blade a to be rigidly clamped between the back plate 0 and l the wedge (Z. The plate 0 and wedge d are connected by headed studs '1) and slots 10 enabling the wedge (Z to be shifted on the plate 0 and inserted into the stamped out 00p 0 or withdrawn therefrom. The plate 0 and wedge (Z are formed to a conical ear or tubular piece f, gin order to receive the wood handle 8.

In the modification shown in Figs. 4 and 5 the back plate a is provided with the tubular portions h it having between them a recess into which fits a similar portion h projecting the construction shown in Fig. 1 or Fig. 4. The plate 0 may be provided with a loop t for guiding a tongue 0 the protuberance Q of which limits the movement of the said clamping means by bearing against the said loop t. The tongue 0 may be also dispensed with without departing from my invention.

What I claim and desire to be protected by Letters Patent is:

1. In a saw having a handle said handle consisting of a back plate bearing against the saw which is slotted, a loop stamped out of the back plate and engaging the saw slot, a wedge or front plate engaging the loop, said back and front plates forming means to receive the handle as described and set forth. 2. In a saw having a handle, said handle consisting of a back plate bearing against the saw which is slotted, a loop stamped out of the back plate, a wedge or front plate engaging the loop and a spring forming part of the wedge plate and engaging the loop said back and front plates forming means to receive the handle as described and set forth.

GUSTAV ALBERT ZIMMERMANN. Witnesses OTTO Konie, WM. WASHINGTON BRUNswioK.

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